ABAP Select data from SAP table FINSS_ACCFI_EXT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FINSS_ACCFI_EXT table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to FINSS_ACCFI_EXT. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the FINSS_ACCFI_EXT table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_FINSS_ACCFI_EXT TYPE STANDARD TABLE OF FINSS_ACCFI_EXT,
      WA_FINSS_ACCFI_EXT TYPE FINSS_ACCFI_EXT,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <FINSS_ACCFI_EXT> TYPE FINSS_ACCFI_EXT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FINSS_ACCFI_EXT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FINSS_ACCFI_EXT
  INTO TABLE IT_FINSS_ACCFI_EXT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINSS_ACCFI_EXT
*  INTO TABLE @DATA(IT_FINSS_ACCFI_EXT2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_FINSS_ACCFI_EXT INDEX 1 INTO DATA(WA_FINSS_ACCFI_EXT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FINSS_ACCFI_EXT ASSIGNING <FINSS_ACCFI_EXT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINSS_ACCFI_EXT>-REFERENCEDOCUMENTTYPE = 1.
<FINSS_ACCFI_EXT>-REFERENCEDOCUMENT = 1.
<FINSS_ACCFI_EXT>-REFERENCEDOCUMENTCONTEXT = 1.
<FINSS_ACCFI_EXT>-ACCOUNTINGDOCUMENTITEMREF = 1.
<FINSS_ACCFI_EXT>-NAME = 1.

ENDLOOP.

LOOP AT IT_FINSS_ACCFI_EXT INTO WA_FINSS_ACCFI_EXT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINSS_ACCFI_EXT-NAME2, sy-vline,
  WA_FINSS_ACCFI_EXT-NAME3, sy-vline,
  WA_FINSS_ACCFI_EXT-NAME4, sy-vline,
  WA_FINSS_ACCFI_EXT-POSTALCODE, sy-vline,
  WA_FINSS_ACCFI_EXT-CITY, sy-vline,
  WA_FINSS_ACCFI_EXT-COUNTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINSS_ACCFI_EXT you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_FINSS_ACCFI_EXT TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_FINSS_ACCFI_EXT INTO WA_FINSS_ACCFI_EXT.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field REFERENCEDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FINSS_ACCFI_EXT-REFERENCEDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINSS_ACCFI_EXT-REFERENCEDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_FINSS_ACCFI_EXT-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINSS_ACCFI_EXT-LANGUAGE.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FINSS_ACCFI_EXT_STR, 
REFERENCEDOCUMENTTYPE TYPE STRING,
REFERENCEDOCUMENT TYPE STRING,
REFERENCEDOCUMENTCONTEXT TYPE STRING,
ACCOUNTINGDOCUMENTITEMREF TYPE STRING,
NAME TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
POSTALCODE TYPE STRING,
CITY TYPE STRING,
COUNTRY TYPE STRING,
STREET TYPE STRING,
POBOX TYPE STRING,
POBOXPOSTALCODE TYPE STRING,
POSTOFFICEBANKACCOUNT TYPE STRING,
BANKACCOUNTNUMBER TYPE STRING,
BANKNUMBER TYPE STRING,
BANKCOUNTRY TYPE STRING,
IBAN TYPE STRING,
TAXNUMBER1 TYPE STRING,
TAXNUMBER2 TYPE STRING,
VATLIABILITY TYPE STRING,
EQUALTAX TYPE STRING,
REGION TYPE STRING,
BANKCONTROLKEY TYPE STRING,
DATAEXCHANGEINSTRUCTION TYPE STRING,
DATAMEDIUMEXCHANGEINDICATOR TYPE STRING,
ISONETIMEACCOUNT TYPE STRING,
PAYMENTRECIPIENT TYPE STRING,
LANGUAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINSS_ACCFI_EXT_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_FINSS_ACCFI_EXT_STR-REFERENCEDOCUMENTTYPE sy-vline 
WA_FINSS_ACCFI_EXT_STR-REFERENCEDOCUMENT sy-vline 
WA_FINSS_ACCFI_EXT_STR-REFERENCEDOCUMENTCONTEXT sy-vline 
WA_FINSS_ACCFI_EXT_STR-ACCOUNTINGDOCUMENTITEMREF sy-vline 
WA_FINSS_ACCFI_EXT_STR-NAME sy-vline 
WA_FINSS_ACCFI_EXT_STR-NAME2 sy-vline 
WA_FINSS_ACCFI_EXT_STR-NAME3 sy-vline 
WA_FINSS_ACCFI_EXT_STR-NAME4 sy-vline 
WA_FINSS_ACCFI_EXT_STR-POSTALCODE sy-vline 
WA_FINSS_ACCFI_EXT_STR-CITY sy-vline 
WA_FINSS_ACCFI_EXT_STR-COUNTRY sy-vline 
WA_FINSS_ACCFI_EXT_STR-STREET sy-vline 
WA_FINSS_ACCFI_EXT_STR-POBOX sy-vline 
WA_FINSS_ACCFI_EXT_STR-POBOXPOSTALCODE sy-vline 
WA_FINSS_ACCFI_EXT_STR-POSTOFFICEBANKACCOUNT sy-vline 
WA_FINSS_ACCFI_EXT_STR-BANKACCOUNTNUMBER sy-vline 
WA_FINSS_ACCFI_EXT_STR-BANKNUMBER sy-vline 
WA_FINSS_ACCFI_EXT_STR-BANKCOUNTRY sy-vline 
WA_FINSS_ACCFI_EXT_STR-IBAN sy-vline 
WA_FINSS_ACCFI_EXT_STR-TAXNUMBER1 sy-vline 
WA_FINSS_ACCFI_EXT_STR-TAXNUMBER2 sy-vline 
WA_FINSS_ACCFI_EXT_STR-VATLIABILITY sy-vline 
WA_FINSS_ACCFI_EXT_STR-EQUALTAX sy-vline 
WA_FINSS_ACCFI_EXT_STR-REGION sy-vline 
WA_FINSS_ACCFI_EXT_STR-BANKCONTROLKEY sy-vline 
WA_FINSS_ACCFI_EXT_STR-DATAEXCHANGEINSTRUCTION sy-vline 
WA_FINSS_ACCFI_EXT_STR-DATAMEDIUMEXCHANGEINDICATOR sy-vline 
WA_FINSS_ACCFI_EXT_STR-ISONETIMEACCOUNT sy-vline 
WA_FINSS_ACCFI_EXT_STR-PAYMENTRECIPIENT sy-vline 
WA_FINSS_ACCFI_EXT_STR-LANGUAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.